Adjustable butt stock



K. R. LEWIS ETAL 3,137,958

ADJUSTABLE BUTT STOCK June 23, 1964 Filed Oct. 29, 1962 3 Sheets-Sheet 1IJJ 28 \e \5 so |2 va l7 2| 2 KARL R. w\s FIG 2. gsnuce w. BRowmNe JM Qmmy June 23, 1964 K. R. LEWIS ETAL 3,137,958

ADJUSTABLE BUTT STOCK Filed Oct. 29, 1962 s Sheets-Sheet 2 INVENTOR.KARL R. LEW 5 %RUC E W. BROWN \NG June 23, 1964 LEWIS ETAL 3,137,958

ADJUSTABLE BUTT STOCK Filed Oct. 29, 1962 3 Sheets-Sheet 3 I i IINVENTOR KARL R. LEWB BRUCE W. BROWNMG United States atent fificePatented June 23, 1964 3,137,953 ADJUSTABLE BUTT STGCK Karl R. Lewis andBruce W. Browning, Ogden, Utah, assignors to Browning Industries, Inc.,Ogden, Utah, a corperatien of Utah Filed Get. 29, 1962, Ser. No. 234,2836 Claims. (Ci. 42-73) This invention relates generally to fire arms andis more particularly directed to an adjustable butt stock for fire arms.

A principal object of the present invention is to provide a fire armwith an adjustable butt stock which permits both children and adultshaving difierent pull requirements to shoot the firearm comfortably andefficiently.

Another object of the present invention is to provide a firearm with anadjustable butt stock which is easily and readily adjusted withoutaifecting the shooting qualities of the firearm.

A further object of the present invention is to provide a. firearm withan adjustable butt stock which does not detract from the normal pleasantappearance of the firearm with the butt stock in its retracted position.

A still further object of the present invention is to provide a firearmwith an adjustable butt stock which is simple in construction and itsoperation and inexpensive in cost yet most effective in its function ofpermitting persons having different pull requirements to fire thefirearm.

With these and other objects in view, the invention will be bestunderstood from a consideration of the following detailed descriptiontaken in connection with the accompanying drawing forming a part of thisspecification, with the understanding, however, that the invention isnot confined to any strict conformity with the showing of the drawingbut may be changed or modified so long as such changes or modificationsmark no material departure from the salient features of the invention asexpressed in the appended claims.

In the drawings:

FIGURE 1 is a longitudinal sectional view of a butt stock of a fire armshowing my adjustable butt plate.

FIGURE 2 is a similar view showing the butt plate in an extendedposition.

FIGURE 3 is a cross sectional view taken along 3-3 of FIGURE 2.

FIGURE 4 is a side elevational view of the slide lock rod as seenremoved from the butt stock.

FIGURE 5 is a front elevational view thereof.

FIGURE 6 is a side elevational view of a modified construction of myslide lock rod.

FIGURE 7 is a fragmentary side elevational view of a guide bar for usewith the slide lock shown by FIG- URE 6.

FIGURE 8 is a side elevational view of a further modified constructedslide lock rod.

FIGURE 9 is a fragmentary side elevational view of a guide bar for usewith the slide lock rod shown by FIG- URE 8.

Referring to the drawings wherein like numerals are used to designatesimilar parts throughout the several views, the numeral It! refers tothe butt stock of a firearm such as a rifle, shot gun and the like onwhich is mounted my adjustable butt plate 11 for quick and readyadjustment thereon as is described in detail hereinafter. The butt stock11 is provided with a vertically disposed bore 12 which extends from thelower wall of the butt stock to a position adjacent to the upper wallthereof. A pair of spaced and parallel horizontal bores 13 and 14intersect the vertical bore 12 and extend longitudinally of the buttstock 10 from the end Wall 15.

Slidably mounted in the parallel horizontal bores 13 and 14 are guidebars 16 and 17 of the adjustable butt plate 11. The butt plate 11 isprovided with a shoulder engaging plate member 18 which is flat on itsinner side Wall normally abutting against the end wall 15 of the buttstock 10 and whose outer surface is contoured to fit a persons shoulderas are the conventional butt stocks of rifles and shot guns. The guidebars 16 and 17 may be secured to the adjustable butt plate member 18 inany appropriate manner as by welding. In the instant butt plate 11, theguide bars 16 and 17 are provided with dowelled end portions 19 whichare received by bores in the plate member 18. The ends 19 are chamferedand welded flush with the outer surface, then ground and polished toprovide a smooth outer surface. The guide bars 16 and 17 aresubstantially identical in construction consisting of a cylindrical bodyportion 20 slotted longitudinally as at 25 to form a pair of spacedguide members 26 which fit snugly in the bores 13 and 14 so as to slideeasily therealong. The upper portion of the body portion 20 is slottedto form shoulders 21 and 22 and provided with a plurality of equallyspaced notches 23 having a V-shape. The notches 23 of the guide bars 20are engaged by a plurality of V-shaped locking tooth members 27 and 28-mounted on a slide lock rod 30.

The lock rod 30 which is slidably positioned in the vertical bore 12 isprovided with a cylindrical body member 31 having the same diameter asthe bore 12. Portions of the body member 31 are slotted along each sideas at 32, 32 and 33, 33 to form reduced portions 34 and 35 which arepositioned in the slots 25 between the pairs of spaced guide members 26.The lower end 36 of the lock rod 30 is provided with a coaxiallypositioned threaded bore for receiving an adjusting bolt 37 while theupper end of the lock rod 30 is provided with a socket 38 for receivingthe lower end of a coil spring 39. The coil spring 39 engages the upperend of the vertical bore 12 to yieldingly urge the lock rod 30 in anoutward or downward direction. The locking teeth 27, 28 which normallyengage the notches 23 prevent the slide lock rod 30 from sliding out ofbore 12. By applying a force against the adjusting bolt 37 in anupwardly direction, the coil spring 39 will be compressed and the lockrod 30 will slide upwardly to disengage the teeth 28, 23 and 27, 27 fromthe notches 23. The adjustable butt plate 11 is now free to be slid inany direction to place it on the desired position with relation to theend wall 15 of the butt stock 10. In order to prevent inadvertentlypulling the adjustable butt plate 11 completely free of the butt stock10, the teeth 28, 28 and 27, 27 will be engaged by the shoulders 22 onthe ends of the guide members 26. This is accomplised by the adjustingbolt 37 which bears against the lower surface of the guide members 26 toprevent the lock rod 30 from sliding upwardly beyond the engagement ofthe teeth 27, 28 with the shoulders 22. To remove the adjustable buttplate 11, the adjusting bolt 37 is unthreaded a short distance. Then anupward force on the adjusting bolt 37 will permit the lock rod 30 toslide upwardly against the spring pressure 39 to a position wherein theteeth 27, 28 will be above and free of the shoulders 22 and above thehorizontal bores 13, 14. The adjustable butt plate 11 can now be removedentirely from the butt stock 10 and the lock rod 30 will slidedownwardly and outwardly of the bore 12.

To replace the lock rod 30 and the adjustable butt plate 11 back totheir operating positions on the butt stock 10, the lock rod 30 is slidupwardly in the bore 12 until the coil spring 39 is compressed and theteeth 27, 27 and 28, 28 are above the top edges of the horizontal bores14 and 13 respectively. The guide members 26 are then inserted into thebores 13 and 14 and made to slide inwardly until at least one pair ofnotches 23 have passed the position of the vertical bore 12. The lockrod 30 is then released of the upward force having been applied thereon.The coil spring 39 will cause the lock rod 30 to slide 9 1.3 downwardlyuntil the teeth 27, 27 and 28, 28 engage the guide members 26. A push orpull on the adjustable butt stock 11 will cause the guide members 26 toslide until the teeth 27, 27 and 28, 28 engage the notches 23 at thedesired position of the adjustable shoulder plate member 18. Theadjusting bolt 37 is then threaded inwardly to its housed position asshown by FIGURE 2. The adjustable bolt 37 will now permit the lock bolt30 to slide upwardly a distance sufficient only for the teeth 27, 27 andT28, 28 to be disengaged from the notches 27 but lie in the path of theshoulders 28 at the ends of the guide members 26. When the shoulderplate member 18 is in abutting relation with the end wall of the buttstock 10, the appearance will be that of a permanently rigidly securedbutt plate of conventional rifles, shot guns, etc. Only when a change inthe length of pull is required by the user will the adjustable buttplate 11 be adjusted with relation to the butt stock 10. This permitschildren and adults to shoot the same gun with comfort giving each userof the gun their proper pull requirement, namely, the distance from thecenter of the butt plate 18 to the trigger of the gun.

Various arrangements of teeth and engaged notches may be utilized indifferent types of guns for achieving differently desired results. Forinstance, if a quick change of pull is desired without the necessity ofpushing inwardly on the lock bolt 37, notches 23 which are V- shaped aresubstituted by notches 43 which have one vertical leg 44 and arearwardly extending leg 45 as shown by FIGURE 7. The lock rod as shownby FIGURE 6 is modified to provide teeth 49 which have an uprightforward wall 47 and a rearwardly tapering rear wall 48.

' 'This combination of notches 43 on the guide members 46 and teeth 49on the lock rod will permit the adjustable butt plate 11 to be pulledoutwardly without the necessity of pushing upwardly on the adjustingbolt 37. The outward pulling force will cause the rear walls 48 of theteeth 49 to slide upwardly along the rear edges of the notches 43.However, to push the adjustable butt plate .18. inwardly, an upwardforce on the lock rod 30 must still be applied against the adjusting nut37 In the use of the adjustable butt plate 11 on high powered firearmswhere the recoil force is great, the lock rod 30 shown by FIGURE 8 andthe guide members 56 having notches 53 are utilized. The body member 50of the lock rod 30 is provided with teeth 56 having blunt end portionswhich are received by squared notches 53 of the guide members 56. Thereis no possibility of the teeth 56 being inadvertently lifted out of thenotches 53 by any forces being applied on the butt plate 18. In thisinstance, the body member 50 of the lock rod 30 must he slid upwardly bya force applied against the adjusting nut 37 in order to adjust theposition of the butt plate in either direction.

What we claim as new and desire to secure by Letters Patent of theUnited States is:

l. A firearm comprising a butt stock having a longitudinal and atransverse bore, said bores being in inter-- secting relationship, abutt plate positioned on said stock, a guide member secured at one endto said butt plate and slidably positioned in said longitudinal bore insaid stock, locking means slidably positioned in said transverse bore,means mounted on said locking means engaging said guide member andsecuring said guide member against sliding movement, and means urgingsaid locking means into engagement with said guide member.

2. A firearm comprising a butt stock having a plurality of longitudinalbores and a transverse bore, said transverse bore intersecting saidlongitudinal bores, a butt plate positioned on said stock, a pluralityof guide members secured at one end to said butt plate and slidablypositioned in said longitudinal bores in said stock, locking meansslidably positioned in said transverse bore, means mounted on saidlocking means cooperatively engaging said guide members and securingSaid guide members against sliding movement and means urging saidlocking means into engagement with said guide members.

3. A firearm comprising a butt stock having a longitudinal bore and atransverse bore, said transverse 'bore intersecting said longitudinalbore, a butt plate positioned on said stock, a guide member secured atone end to said butt plate and slidably positioned in said longitudinalbore in said stock, said guide member having a plurality of notchesthereon, lock rod means slidably positioned in said transverse bore,resilient means urging said lock rod means in one direction of saidtransverse bore, a notch engaging member mounted on said lock rod meansen-' gaging one of said notches and meansmounted on the free end of saidlock rod means limiting the sliding move ment of said lock rod means inthe other direction.

4. A firearm comprising a butt stock having a plurality of longitudinalbores and a transverse bore, a butt plate positioned on said stock, aplurality of guide members secured at one end to said butt plate andslidably positioned in said longitudinal bores in said stock, said guidemembers having a plurality of notches thereon, lock rod means slidablypositioned in said transverse bore, resilient means urging said lock rodmeans in one direction of said transverse slot, a plurality of notchengaging members mounted on said lock rod means engaging said notchesand means mounted on the free end of said lock rod means limiting thesliding movement of said lock rod means in the other direction.

5. A firearm comprising a butt stock having a plurality of substantiallyhorizontally disposed bores extending from a rear wall and a verticallydisposed bore extending from a bottom wall, said bores beingsubstantially coplanar, a shoulder engaging butt plate positioned onsaid rear wall of said butt stock, a plurality of elongated guidemembers secured at one end to said butt plate and slidably positioned insaid horizontally disposed bores, said guide members having alongitudinally disposed slot and a plurality of notches, shoulder meansmounted in proximity of the free end of said guide members, lock rodmeans slidably positioned in said vertical bore, resilient means urgingsaid lock rod means in an outward direction, said lock rod means havingslotted portions for slidably positioning said slotted'portion of saidguide members transversely to said lock rod means, a plurality of teethmounted on said lock rod means and engaging said notches on said guidemembers, adjusting bolt means mounted at a free end of said lock rodmeans and engaging one of said guide members for limiting the slidingmovement of said lock rod means in the inward direction against saidresilient means.

6. A firearm comprising a butt stock having a plurality of substantiallyhorizontally disposed bores extending from a rear wall and a verticallydisposed bore extending from a bottom wall, said bores beingsubstantially coplanar, a shoulder engaging butt plate positioned onsaid rear wall of said butt stock, a plurality of elongated guidemembers secured at one end to said butt plate and slidably positioned insaid horizontally disposed bores, said' guide members having alongitudinally disposed slot 6X-' tending substantially the full lengthof said elongated guide members along the mid-portion of said guidemembers and a plurality of notches, shoulder means mounted in proximityof the free end of said guide members, lock rod means slidablypositioned in said vertical bore, resil-' ient means urging said lockrod means in an outward direction, said lock rod means having reducedportions No references cited.

1. A FIREARM COMPRISING A BUTT STOCK HAVING A LONGITUDINAL AND ATRANSVERSE BORE, SAID BORES BEING IN INTERSECTING RELATIONSHIP, A BUTTPLATE POSITIONED ON SAID STOCK, A GUIDE MEMBER SECURED AT ONE END TOSAID BUTT PLATE AND SLIDABLY POSITIONED IN SAID LONGITUDINAL BORE INSAID STOCK, LOCKING MEANS SLIDABLY POSITIONED IN SAID TRANSVERSE BORE,MEANS MOUNTED ON SAID LOCKING MEANS ENGAGING SAID GUIDE MEMBER ANDSECURING SAID GUIDE MEMBER AGAINST